Removal of YUBIKEY triggerst system reboot

Hi all I am using a YUBIKEY to unlock my luks partition. I used the community guide LUKS with Yubikey 2FA (chal-resp) on Qubes 4.2.0 - Community Guides - Qubes OS Forum to implement it on my machine. Now a friend asked me to set up a YUBIKEY with his Gen3 ThinkPad T14 (32gb, i7.1260P). Everything works fine except when pulling out the YUBIKEY (no matter what point - directly after unlocking or even when I am fully logged in and sys-usb is spun up) - then the system reboots. Similar to TAILS-usb when pulled out of the machine. Does anyone know what might trigger that behavior and maybe how to prevent that?